<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
	<script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <!-- 准备好一个容器 -->
    <div id="root">

        <!-- 遍历数组 -->
        <h2>人员列表</h2>
        <button @click.once="add">添加一个老刘</button>
        <ul>
            <li v-for="(p, index) of persons" :key="index">
                {{p.name}} - {{p.age}}
                <input type="text">
            </li>
        </ul>
    </div>
</body>
<script type="text/javascript">
    Vue.config.productionTip = false
    new Vue({
        el: '#root',
        data: {
            persons: [
                {id: '001', name: '张三', age: 18},
                {id: '002', name: '李四', age: 19},
                {id: '003', name: '王五', age: 20},
            ],
        },
        methods: {
            add(){
                const p = {id: '004', name: '老刘', age: 40}
                this.persons.unshift(p)
            }
        }
    })
</script>
</html>